Charge recombination reduction in Dye-sensitized solar cells by means of spray pyrolysis Deposited ZnO is blocking layer between the conductive glass and photoelectrode

Recombination one of the most important factors in reducing the efficiency of Dye Solar cell, in order to reduce therecombination in DSSC in this project We be used the blocking layer, the first ZnO nanoparticle were prepared by thesol-gel method. The size of the nanoparticle characterized by DLS (6 nm)Then the sol deposited by Spray pyrolysis andthin film under various conditions can be optimized .To verify the transparency and the formation of crystallinestructure of the measured UV and XRDThen ZnO film is employed as a blocking layer between FTO and mesopourseTiO2 film in DSSC, which improved FF and Jsc, finally increasing energy conversion efficiency from 5.6 to 6.80represents reduction of recombination and increase resistance recombination.

کلیدواژه ها:

electron recombination ، thin film ، dye solar cell ، ZnO